drm/amd/display: Set watermarks set D equal to A

[Description]
- Since we do not use optimized watermark settings for MALL,
  set D = A
- PMFW uses Set D for d0i3.1, so driver should make D = A for the
  time being
- If we choose to optimize in the future we can set watermarks D
  correctly

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index 23a972f..2f77230 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -2062,6 +2062,7 @@ void dcn32_calculate_wm_and_dlg_fpu(struct dc *dc, struct dc_state *context,
         * sr_enter_exit/sr_exit should be lower than used for DRAM (TBD after bringup or later, use as decided in Clk Mgr)
         */
 
+       /*
        if (dcn3_2_soc.num_states > 2) {
                vlevel_temp = 0;
                dcfclk = dc->clk_mgr->bw_params->clk_table.entries[0].dcfclk_mhz;
@@ -2088,6 +2089,7 @@ void dcn32_calculate_wm_and_dlg_fpu(struct dc *dc, struct dc_state *context,
        context->bw_ctx.bw.dcn.watermarks.d.urgent_latency_ns = get_urgent_latency(&context->bw_ctx.dml, pipes, pipe_cnt) * 1000;
        context->bw_ctx.bw.dcn.watermarks.d.cstate_pstate.fclk_pstate_change_ns = get_fclk_watermark(&context->bw_ctx.dml, pipes, pipe_cnt) * 1000;
        context->bw_ctx.bw.dcn.watermarks.d.usr_retraining_ns = get_usr_retraining_watermark(&context->bw_ctx.dml, pipes, pipe_cnt) * 1000;
+       */
 
        /* Set C, for Dummy P-State:
         * All clocks min.
@@ -2189,6 +2191,9 @@ void dcn32_calculate_wm_and_dlg_fpu(struct dc *dc, struct dc_state *context,
                context->bw_ctx.bw.dcn.watermarks.a.usr_retraining_ns = get_usr_retraining_watermark(&context->bw_ctx.dml, pipes, pipe_cnt) * 1000;
        }
 
+       /* Make set D = set A since we do not optimized watermarks for MALL */
+       context->bw_ctx.bw.dcn.watermarks.d = context->bw_ctx.bw.dcn.watermarks.a;
+
        for (i = 0, pipe_idx = 0; i < dc->res_pool->pipe_count; i++) {
                if (!context->res_ctx.pipe_ctx[i].stream)
                        continue;